This commit introduces a new module called vr_user_facts.
This module aims to return the list of user avaiable avaiable in Vultr.
Sample available here:
```
"vultr_user_facts": [
{
"acls": [],
"api_enabled": "yes",
"email": "mytestuser@example.com",
"id": "a235b4f45e87f",
"name": "mytestuser"
}
]
```
